Improvement of the Efficiency/Cost Ratio of Chemical EOR Processes by Using Surfactants, Polymers, and Alkalis in Combination

1995 ◽  
Vol 10 (03) ◽  
pp. 187-193 ◽  
Author(s):  
Marc Baviere ◽  
Philippe Glenat ◽  
Veronique Plazanet ◽  
Jean Labrid
Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6520
Author(s):  
Pablo Druetta ◽  
Francesco Picchioni

The traditional Enhanced Oil Recovery (EOR) processes allow improving the performance of mature oilfields after waterflooding projects. Chemical EOR processes modify different physical properties of the fluids and/or the rock in order to mobilize the oil that remains trapped. Furthermore, combined processes have been proposed to improve the performance, using the properties and synergy of the chemical agents. This paper presents a novel simulator developed for a combined surfactant/polymer flooding in EOR processes. It studies the flow of a two-phase, five-component system (aqueous and organic phases with water, petroleum, surfactant, polymer and salt) in porous media. Polymer and surfactant together affect each other’s interfacial and rheological properties as well as the adsorption rates. This is known in the industry as Surfactant-Polymer Interaction (SPI). The simulations showed that optimum results occur when both chemical agents are injected overlapped, with the polymer in the first place. This procedure decreases the surfactant’s adsorption rates, rendering higher recovery factors. The presence of the salt as fifth component slightly modifies the adsorption rates of both polymer and surfactant, but its influence on the phase behavior allows increasing the surfactant’s sweep efficiency.


2016 ◽  
Author(s):  
E. Rosenberg ◽  
M. Robin ◽  
B. Bourbiaux ◽  
M. Chabert ◽  
E. Chevallier ◽  
...  

1994 ◽  
Vol 16 (4) ◽  
pp. 125-129
Author(s):  
Claude Mordini

There is tremendous pressure on industry and laboratories to develop increasingly complex procucts: for example catalysts, chiral chemicals, drugs and ceramics; conform to regulations; cope with increasingly severe competition; and meet steadily increasing costs. It is difficult, in this situation, to remain productive and competitive. It is vital to be equipped with, and be able to use appropriately, all the suitable methodologies and technologies. Working methods and personnel have to be appropriate. The future depends on three interdependent domains: automation in the broadest sense of the word, instrumentation and information systems. The easy work has already been done. Between 1984 and 1990, it was a question of going from nothing to something; now, it is necessary to increase and optimize.Therefore, the crucial question is now: ‘how can we go quicker in experimentation and acquire more knowledge, while spending less money?’ One solution is to use all the aspects of automation (robotics, instrumentation, data). Successful laboratory automation depends.on: shortened time to market; improved efficiency/cost ratio; motivation/competence/ expertise; communication; and knowledge acquisition. This paper examines some of the major technological areas of application.


2014 ◽  
Author(s):  
Sabrina Hocine ◽  
Alisson Magnan ◽  
Guillaume Degre ◽  
David Rousseau ◽  
Nicolas Rousseau
Keyword(s):  

2017 ◽  
Vol 14 (4) ◽  
pp. 172988141772733
Author(s):  
Fei Yang ◽  
Honghao Yue ◽  
Meng Li ◽  
Jianguo Tao ◽  
Zongquan Deng

Planetary rovers with folding functions can solve the contradiction between the limited space of the vehicle and the functional diversity of the rover and greatly improve the efficiency–cost ratio of space launch activities. In this article, the multi-constrained quadrilateral suspension is considered based on the practical requirements of planetary detection. Based on graph theory and metamorphic theory, the structural characteristics and movement patterns of the rover are analyzed, the configuration transforming process of adding or decreasing the number of rods and kinematic pairs during folding is studied, and the corresponding mathematical model is established. The suspension of the rover is divided into three basic units, and the folding study is performed around each unit. The folding set of each unit type is given, and a feasible folding set is selected for each type of unit according to their structural characteristics and constraint conditions. At the same time, 15-folding schemes for the rover are given, and the optimal scheme is determined. According to the final folding scheme of the rover, the principle prototype of the rover is developed, and the functional experiment of the folding and unfolding is performed. The experimental results verify the feasibility and rationality of the folding scheme, indicating that the developed detection vehicle has a large fold ratio, which can fully adapt to the limited space inside the rocket. The theoretical and technical results can provide technical support for the engineering application of subsequent rovers with folding.


2014 ◽  
Author(s):  
Jonathan Mitchell ◽  
John Staniland ◽  
Alex Wilson ◽  
Andrew Howe ◽  
Andrew Clarke ◽  
...  
Keyword(s):  

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